ROUTING INFORMATION PROTOCOL WITH BACKUP ROUTER RECOVERY
Original Publication Date: 1997-Sep-01
Included in the Prior Art Database: 2002-Jun-10
In Routing Information Protocol (RIP), a router broadcasts its routes every thirty seconds. If a router is not refreshed within 180 seconds, a router is declared failed, and the distance is set to infinity, and distance vector algorithm is performed to find a new route to that destination. Waiting 180 seconds to decide a router unoperational has a negative effect on network robustness, especially in wireless net- works that are very sensitive to transmission delays. Furthermore, during this network convergence rout- ing tables may include infinitive loops. Bouncing packets between loops increase large amount of packet loses and the congestion of the network.